VM Series Maintenance and Safety Manual 704-0212-209 Machine Maintenance 3- 15
Flush, Clean Tank, and Refill the Chiller Solution in the Spindle Chiller Tank
Annually or every 2000 hours: Flush, clean, and refill the spindle chiller tank (if
equipped) once each year and any time the spindle chiller solution shows signs of
contamination or overheating.
Follow these steps:
1. Gradually add the flushing agent solution per the flushing agent supplier’s
recommendations.
2. Leave machine power on to allow the solution to circulate through the chiller
system for 24 hours.
3. Empty the solution.
a. Shut off machine power.
b. Locate the drain on the bottom front of the chiller tank.
c. Remove the drain plug.
d. Use a funnel to drain fluid into a container. Discard the chiller solution per
applicable laws.
e. Replace the drain plug.
4. Fill the chiller system with clean chiller solution. Refer to Table 3–
1.Lubrication, on page 3 - 5 for appropriate lubricant amounts and types. Do
not overfill tank.
Remove Air from Spindle Chiller Circulating System
If air penetrates the circulating system, the flow rate will decrease and there will be noise
in the system. To remove air from the circulating system,
1. Turn on the main machine power. This starts the chiller unit, and the pump will
start operating.
2. Loosen the pipe slightly at the outlet of the cooler unit to push the air out of
the system.
3. Tighten the pipe.
4. Switch off the main machine power.
Repair Leaks in the Spindle Chiller
Leaky pipes can be repaired using tube clips or by replacing the pipes. If welding is
required to repair a leaky pipe,
1. Choose a well-ventilated area.
2. Extract all water from the cooler unit.
3. Disconnect all pipes between the machine tool and the cooler unit.
4. Extract refrigerant our of the cooler unit according to the relevant regulations
of environmental protection.
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